The Mastiff is a battlefield UAV built by Tadiran Electronic Industries. It first flew in 1973. It featured data-link system and miniaturized electronics that fed live and high-resolution video coverage of the targeted area to operators. It is thus seen as the first modern surveillance UAV. The combination of its long flight endurance of over 7 hours and real-time video streaming gave Israeli forces unprecedented depth of coverage, speed of information delivery and on-station surveillance time.